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Rahiche/getPercent.dart Secret

Created December 18, 2018 21:41
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getPercent.dart
// how much space is available compared to the inital one {appBarHeight}
// in my example : appBarHeight = 200.0
double percent = ((constraints.maxHeight - kToolbarHeight) *
100 /
(appBarHeight - kToolbarHeight));
//we will rotate from 0 to 90
double angle = percent * 90 / 100;
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